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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Hybrid Battery Control System - Service Information (1 Of 2)) >> Hybrid Vehicle Control Ecu >> Removal [12/2019 - 10/2022] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different variant/trim than selected.

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during hybrid vehicle control ECU removal/installation are shown below.

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED

Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
Disconnect cable from negative battery terminal Perform steering sensor zero point calibration Lane control system Refer to INITIALIZATION [12/2019 - ]
Parking Support Brake System*1
Pre-collision system
Lighting System (EXT) (w/ AFS)
Memorize steering angle neutral point Parking assist monitor system Refer to INITIALIZATION [12/2019 - 10/2022]
Panoramic view monitor system Refer to INITIALIZATION [12/2019 - 10/2022]
Initialize back door lock Power Door Lock Control System Refer to INITIALIZATION [12/2019 - 11/2023]
Reset back door close position Power Back Door System Refer to INITIALIZATION [12/2019 - 11/2023]
Replacement of hybrid vehicle control ECU Code registration
  • Wireless Door Lock Control System
  • Smart Key System (for Entry function)
  • Smart Key System (for start function)
  • Hybrid control system cannot be started
  • Telematics System
Refer to REGISTRATION [12/2019 - 10/2021] , or refer to REGISTRATION [10/2021 - 11/2023]

*1: Learning can also be performed using the GTS.

NOTE:

After the ignition switch is turned off, the radio and display receiver assembly or the radio receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 120 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal.